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UNITED STATES LOUIS, ENRIOHT,

PATENT OFFICE.

OF NEV YORK, N. Y., ASSIGNOR TO THE STEREO-RELIEF DECORATIVE COMPANY, OF SAME PLACE.

ART OF MAKING PLASTER CASTS.

SPECIFICATION forming part of Letters Patent No. 450,287, dated April 14, 1891.

Application filed J ly 31, 1890. $eria1 No. 360,565. (No specimens.)

To all whom it may concern.-

Be it known that I, LOUIS ENRIOHT, a citizen ofthe United States, residing at New York, in the county and State of New York, have in- 5 vented new and useful Improvements in Oomposition for Treating Plaster and other Casts, of which the following is a specification.

This invention relates to the art of making plaster casts, statuettes, and other articles;

IO and it consists among other things in a new composition to be used in making the same, as set forth in the following specification and claims.

I11 carrying out my invention I prepare a 15 solution composed of the following ingredients in about the proportions mentioned, namely: lime-water, about ten gallons; dextrine about five pounds; sesquioxide of iron, about six pounds, and stir the mixture thor- 2: oughly together. Taking a portion of this solution, which I name preparatory solution, I add thereto a quantity of plaster-ofparis, and make therewith a plastic mass of the'proper consistency for molding or form- 2 5 ing the casts, statuettes, or other articles to be made, using as much of the solution and of the plaster-of-paris as are required for the work in hand. lVhen the composition thus made by the union of the solution and the plaster-of-paris has set, it becomes very hard, and its surface is susceptible of becoming highly polished. For polishing its surface agate, horn, ivory, or other burnishing or polishing tools can be employed.

\Vhat I claim as new, and desire to secure by Letters Patent, is-

1. The preparatory solution above mentioned for use in making statuettes, ornaments, and other articles, which consists of lime-water, dextrine, and sesquioxide of iron mixed together, substantially as above described.

2. The composition for making casts, statuettes, and otherfirbigles, which consists of plastelzotparis combined with the solution above named, consisting of lime-water, den

trina-"and sesquioxide of iron, mixed together, substantially as above described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

LOUIS ENRICHT. 

